Elevator door lock



2 Sheets-Sheet 2 J GIRTEN ELEVATOR DOOR LOCK Filed Dec. 19. 1921 Dec. 11 1923.

n vez? Por J'ame 'z ren cation: 1

locks, and'h'as for itsl object'the provision oi Vsafety 'devices' iniconne'ction with latching Patented Dec. l1, 1923;

A, t unirse cHIcAco, runners; f'

ELnvA'roa 'Doon "noci: Y

Appiiatibp'ie'anecember 1'9, i'eaif yiseiiailms.' ys'aazee.'

TolaZZ whom #mcg/"concern L" Be it known'thatiI, JAMns GIRTN, a'citi'- Myzinvention A.relates elevator d'O means Vby reason of which the elevator" driv-Y ing means jinaybeg thrown out of. operation, andl whichfis particularly adaptedfor application' tov double doorsv 'of vthe type` ordinarily: employed V for elevators.

d actuating mechanism; and

crank.y lever; v theileg V 6 of the lever having a @ther iob'jectsf will appear hereinafter.v The 'invention' consists Vin the'combination and arrangements of parts-*hereinafter de#V scribedan'd claimed:VA

The'invention' will bebest understood by reference to the y accompanying drawings forming" apart ofthis'specification, and in `Fig/lis a side 'elevation' of the invention, showing the parts inoperative position in fulllin'es, andin inoperative position in dette 'lines,"the 'cover' 'otthe latch casing havingbeen broken' `avvayto'ex'pose the 'cpv erative partsof the "mechanism contained therein',W f Fi'gQis a 'side 'elevation of'thefinvent'ion; Fig.' 3 is av sectional view Online 3 3 of Figli; i t

` Fig. 4e' is` afront elevation of the latch Figpl'is a sectional -view von line -of Fig.`4=:i l i t `The' invention `consists` of improvements iny latching, andY making and breaking? devices, of*v the type disclosed in mycompanion application, Serial No; 419,466Jiled` October 25,1920,azwhich has matured into Patent -latchingtand vin-alring and breaking. mechacatch` TI at .its outer' end, leg ,8. b'eng Y ivdd with@ 'segmental extension-i9; as shevzni-HFigal of the drawings-.,A lug jb'err 5 is' so arranged thaty it "normally 'tends to falli-nto Yoperative positionV by its own 10 is I nountedl ontheinner'side oftheleg 6 fora purposejto lbe explaii'ied-fThe`mem7 lweight, such fallin'gmovemen-t beingli'mited A vby a s t'op 11 vinf-:the casingy 3', the rearward movement of' the mem'ber '151 beingdimited by'a stop 12 mounted atj one lside of tli'ef'casev ing: i3'. ,'Pivotally mounted'y adjacent thev lmembeif "is a swingingar'm 13, suchlarinA preferably extending. below the legA 6 and beingnh'eld offJ center by' reasonlfof its en'- 'gagement with'the lugl'O. .."llheinnersur'-y lface 'of-the Varmfl 13 lisl preferably 'provided 'with notches"14Cv adapted' to'eng'age the lug 10, thearrangement being such' that upaward"v movement of the leg- 6'v permits the arm 12 to swing toward' center, thereby caus- -ing the-fengagement'ofl o'nevor the other, of ,the notches; 14C' .:withi the lug 10, whichlre# ltainsI the member 5i'n raised position @until such time as'rthearmfislagain moved oft l center-Which. permits the member tofdrop Y, Y i ,of its ownweight;V

y; Mounted ontheV extension' 9 of theulmem ber 5 by any-'suitable'meansare contact 'Y plates 15 andi 16, suchgplates 4being suitably y insulated from the extension/ 9 "and `from each otherjfDisp'o'sed above said extension is a suitable bracket 17 'which'.fpreferably carriesspr-in'g members 1,8 and 19 whichjhave f Y f their"V inner; ends interposed in the power wires 20. Mounted Ion; the outeren'd-s kof the members 18 and 19 'aresho'es 21 and`22, such shoes being' v'adaqited to rideon the' contacts vmember 5 is movedL 'to --i'noperative position,

the-.shoeQl engagesfthe,4 contact 15 and 'the shoe 22 the contact 16, thereby; interrupting the circuit through the hpower wires 20.

ist.k

15 and 16. l'The arrangements-is such'thatv` when the; member :5 `is in operative position', bothof'theshoes 21 andl'22 engage theco'n- Y Mounted on the door 1; isa vplate. QS-,ca'rryingpnfits upper end,auhook'member` 24C,

,which'is'l adapted. toA be engaged by the catch 7 whenqsaid catch isin,operative' position,iV 1

Pivota-lly mQun'ted on the plate 23.18 al bar 215Such bar having vits inner; endpostined beneath the catch 7,,andilbeinggadaptedito' raise said catch;byiupwardmoiemnt `thereof-.v` Eivotedgto? thel'oppos'itejend, ofthe bar movement vWithlrespect thereto,l bya collar 28 mounted onits end and engaging a stop 29, and limited inV its downward movementU i ,sion 33 mounted on the plate Therod= Yio 26'is also Vprovided with a shoulder 34k for a purpose as will presently appear.;

Y ':Pivotally mounted on the plate 2311s a ylatch 35', the head 3670i such latch being adapted to'engage a hookfmember `37 mounted on the door' 2, Vthe head 36 ofthe latch, Ybeing) Weighted to normally engage the hook-[37;V VThe tail 38 oft the 'latch 35 Aproi jects'beneath thezsho'ulder 34el on Ythe rod 26.

ln; 'operatiomon a.l downward movement of therod 26, throiighqthe bar the mem# ber' .is raised, 'disengaging the catch 7 from the hoolrc24,VV and also disengaging the latch .Y

from thehook'37, throiigl'fi the medium of -thevshoulder 34 Vengaging the tail 33 of such latch. Closingfof the doors releases. the

member- 5 by means of engagement of the hoolr24 withl the pivoted arm 'l3,.permitting the member 5 to drop to operative position .and the latch .35' at the :same time rides-.up and of Vits ovvn'vveight drops over `the ,hook 37. VIn order to permit convenient inspection of the mechanism in the casing 3,V without removing the covering therefrom, l insert in such covering a-:plate 39 parent Voi' translucent-material.

- While l have illustrated and described the preferred/form vof construction for carrying my invention-into effect, this is capable of variation and modification Without departing from the spiritV of the invention. I, therefore, do not Wish to be limited to the precise details ofthe construction set forth, but desire to availfmyself osuch variations and modifications as come Within the vscope oi'gthev appended claims. Y v

Having described my invention, what I claim as new and desire. to secnrebyLetters Patent,is:V Y

1. A device of theV character. described comprising` a movable latching member proof glass, isinglassuor other siiitabletransvidedr With a plurality of, contact means thereon insulated one from the other, and a plurality of contact members arranged inv `a circuit and in position toengage said contact means, movement 'of said latching me1nber to' one positioncausing said-contact Y 7 fmembersfto engage oneof said contacts, and

movement' to another position'-causingsaid member toengage' separate stantially as described. V w

2.1iY device of the 'character Vdescribed comprising a-"latcliing member, means V with which said latchingV member' normallyy engages for holding a door against movement; means for unseating said latchiiig member;

contacts; -subscribed;

meansV .for retaining said latching'inember in unseatedl position; means yvvh'ereby' said latching member is released from said re'- iiig means; a plurality oit contact Vmeans moiinted on said latching vmember and insulated one from the other; and a. plurality of contactmembers arranged in acircuit I.. 3."A Vdevice of ythe V'charafriteri 'described-,1

contacts; ksubf B0'v vtain i ng, means vby engagement of said hold- .7

ref

comprising a latching member in the-formi f of a bell crank lever, one arm otfrvvhich'is provided.l with a curved `extension', and the otherl arm of Whichfforms a catch.; a plusA yrality rof V contactimeans mounted: in the vcurved.extension of said: latchingl;memberV and insulated onetroiny the othergand' vai plurality of contact members arranged:in i a circuit in positionh to engage saidcontact means, movement of :saidlatching member .td one position causing said Contact? members to engage one kolz'l said'contact's and movement to anotherposition causingfsaidQMVV member to. engage separatel contacts, stantially as` described. Y t. -A .device` ofthe character` described comprising a latching member in the-form subof abell crank lever, having a curved'ex-V i tension onV one `legjthereof,.and a catch Aon.

the "other leg thereofgmeans Withliwhich said latching-member normally-engages'for holding a door againstV movementg means for nnseatino;saidlatching:member;VV means jim;

for retainingsaid latching member.V infunseated position; Vmeans wherebyV said latohving member is released from said retaining means by engagement of Vsaid holding means a plurality-of Contact means monntr 'ed in the curved lextension of said latchingmemberand insulatedone from Vthe other;` and a plurality of contact members arrangedV in a circuit inV position toerigage said contact means, movement of said Ylatching member to operative position c ausingsaid conn tact members to engage kone KVof said icontact gmeans, and movement to inoperativepositionl n causing said `Contact members i' to'. engage: contacts;- substantially j as) `de i@ sep arate Y L 5. A device oiY the character l described comprising a latching. member, means vvith Which said latching member -normallyem gages for holding a door" against movement; Vmeans for unseating said -latc'hing member;

meansfor retaining said latchingmemberrin unseated position; means whereby said taining means by engagement of said Yhold- V.latching member is released Vfrom said-re-V Y ilo member having a plurality of contact means arranged therein and insulated one from the other; and a plurality of contact :fingers arranged in the elevator, operating` circuit, and riding on said contact means, so that when the latching member is in operative position both of said fingers engage one of said Vcontact means, and when the latching member is in inoperative position one of said fingers engages one of said contact means and another of said fingers engages another of said contact means,substantially as described.

6. In a device of the character described comprising a movable latching member; means with which said latching member normally engages for holding a door against gether; substantially as described.

7. In a device of the characterdescribed comprising a movable latching member; means with which said ,latching member normally engages for holding a door against movement; a second door cooperating with said first mentioned door; means for disengaging said latching member from said first mentioned do-or; means for retaining said latching member vin unseated position; means whereby said latching member is released from said retaining means by engagement of said holding means; an electric switch associated with said latching member for making and breaking a circuit, and an auxiliary latch actuated simultaneously with said latching member for holding said doors together, substantially as described.

8. In a device of the character described comprising a latching member adapted toengage a door to permit movement' thereof; a latching arm held in inoperative position by said latching member and being permitted -to assume engaging position by the movement of the latching member to inoperative position; means for disengaging said iatching arm; a second door eo-operating withv said first mentioned door; and an auxiliary latch actuated by said d isengaging means to hold said doors together, substantially as described. 9. In a device of the character described comprising a latching member adapted to fall to operative position oits own weight;

means with which saidlatching member engages for holding a'door against movement; a latehing arm held in inoperative position by sald latclnng member and being permitto operative position; means whereby s aid door holdlng means engages sald latching arm to permit said latching member to return to operative engagement; a second door s co-operating with said iirst mentioned door;

and an auxiliary latch operable lby said latching member; unseating means to hold said doors together, substantially as described;

10. In a device of the character described comprising latching means; a door'engaged bv said latching means to prevent movement thereof; asecond door (3o-operating with said first mentioned door; means for operat` ing said latching means; andan auxiliary latch operable by. said latching means for holding said doors together, substantially as described.'

11. In a device of the character described comprising a latching means; a door held against movement by said latching means;

a second door co-operating with said first mentioned door; means for actuating Said latching means; and an auxiliary latch normally engageable by4 gravityr to hold said doors together, and adapted tobe unseated simultaneously with said latching means by said actuating means, substantially asv described. Y

In testimony whereof I have signed my name to this specification in the presenoe'of two subscribing witnesses. v

J AMES GIRTEN.

ted to assume engaging position by move- 

